They provide mild roadblocks for aggro decks, can usually stop one attacker but not a whole swarm, and always net the caster some value, so that they're worthy of maindeck inclusion
The content coordinator of this website likes to refer to me as the best Affinity player in the world. Whether or not thats actually true, I have a ton of experience and a considerable amount of success with the deck in Modern, and this is my attempt to share as much of it with you as I can
I bought a copy the first week for about $35
Once you've gone through a set's mysteries with a Prerelease code, youve completed your journey for that specific set
Those creatures don't untap during their controller's next untap step
In addition, if your Squirrel deck is monogreen there's no reason to avoid artifacts